quota question on perfect install fedora core 5.0

trying to get a fileserver up and running although when i do "yum install quota" it doesn't seem to install. do i need to install the quota package? if so where? i thought i installed the quota package by going to applications->add/remove software it even says that the i386 package is installed. any help would be appreciated thank you. note my errors below when i try to run quotacheck -avugm and quotaon -avug. i am in super user mode too.